Question

Reasoning for the function $f(x,y)=x^{2}e^{y}$ is differentiable on $\mathbb{R}^{2}$.

score 126 · Answer 1 · 2018-05-23 15:23:40

126

Views

Reasoning for the function $f(x,y)=x^{2}e^{y}$ is differentiable on $\mathbb{R}^{2}$.

Published on 23 May 2018 - 15:23

score 2.9k · Answer 2 · 2018-05-23 16:03:53

2.9k

Views

Solution of the Cauchy problem $xu_x + yu_y = 0$, $u(x,y) = x$ on $x^2 +y^2 =1$

Published on 23 May 2018 - 16:03

score 319 · Answer 3 · 2026-03-26 11:03:39

319

Views

When the derivatives are never zero, is the maximum of a function equal to $\infty$?

Published on 26 Mar 2026 - 11:03

score 142 · Answer 4 · 2018-05-24 12:40:15

142

Views

Confusion in Spivak's proof of theorem 2-7 in Calculus on Manifolds

Published on 24 May 2018 - 12:40

score 174 · Answer 5 · 2026-03-25 09:53:39

174

Views

Show implicit function satisfies the following propety

Published on 25 Mar 2026 - 9:53

score 90 · Answer 6 · 2018-05-25 17:18:14

90

Views

How can I calculate the partial derivative to a function that uses matrices with frobenius norm?

Published on 25 May 2018 - 17:18

score 53 · Answer 7 · 2018-05-26 02:25:43

53

Views

Is there any formal calculation method for partial derivative?

Published on 26 May 2018 - 2:25

score 250 · Answer 8 · 2026-03-25 23:36:52

250

Views

Exponential of the directional derivative on a surface

Published on 25 Mar 2026 - 23:36

score 230 · Answer 9 · 2018-05-28 03:13:36

230

Views

Alternative form of the calculation of the second partial derivative of an operator

Published on 28 May 2018 - 3:13

score 89 · Answer 10 · 2026-03-26 18:49:09

89

Views

Initial value problem for PDE - a definition

Published on 26 Mar 2026 - 18:49

score 249 · Answer 11 · 2026-03-26 14:32:00

249

Views

Given an initial system is a Hamiltonian. Show that a linear transformation of this system is also a Hamiltonian and find what the Hamiltonian is

Published on 26 Mar 2026 - 14:32

score 1.4k · Answer 12 · 2026-03-25 20:34:23

1.4k

Views

Cylindrical coordinates and Differential Displacement: unit vectors and differentiation

Published on 25 Mar 2026 - 20:34

score 58 · Answer 13 · 2018-05-29 14:53:46

58

Views

$\left(\int_\Omega \left\vert D^\alpha \frac{1}{|x|}\right\vert^2|x|^{2(\beta+k)}dx\right)^{1/2}\leq C(d)^kk!,\quad\forall |\alpha|=k\in \mathbb{N}$?

Published on 29 May 2018 - 14:53

score 76 · Answer 14 · 2026-03-25 15:42:25

76

Views

second derivative $\mbox{Tr} \left(\left(X^{\frac{3}{2}}AX^{\frac{3}{2}}\right)^{\frac{1}{2}}\right)$ with respect to $X$

Published on 25 Mar 2026 - 15:42

score 322 · Answer 15 · 2026-03-25 09:50:07

322

Views

Does equality of (weak) gradients imply equality of functions up to a constant?

Published on 25 Mar 2026 - 9:50

List Question

Reasoning for the function $f(x,y)=x^{2}e^{y}$ is differentiable on $\mathbb{R}^{2}$.

Solution of the Cauchy problem $xu_x + yu_y = 0$, $u(x,y) = x$ on $x^2 +y^2 =1$

When the derivatives are never zero, is the maximum of a function equal to $\infty$?

Confusion in Spivak's proof of theorem 2-7 in Calculus on Manifolds

Show implicit function satisfies the following propety

How can I calculate the partial derivative to a function that uses matrices with frobenius norm?

Is there any formal calculation method for partial derivative?

Exponential of the directional derivative on a surface

Alternative form of the calculation of the second partial derivative of an operator

Initial value problem for PDE - a definition

Given an initial system is a Hamiltonian. Show that a linear transformation of this system is also a Hamiltonian and find what the Hamiltonian is

Cylindrical coordinates and Differential Displacement: unit vectors and differentiation

$\left(\int_\Omega \left\vert D^\alpha \frac{1}{|x|}\right\vert^2|x|^{2(\beta+k)}dx\right)^{1/2}\leq C(d)^kk!,\quad\forall |\alpha|=k\in \mathbb{N}$?

second derivative $\mbox{Tr} \left(\left(X^{\frac{3}{2}}AX^{\frac{3}{2}}\right)^{\frac{1}{2}}\right)$ with respect to $X$

Does equality of (weak) gradients imply equality of functions up to a constant?

Trending Questions

Popular # Hahtags

Popular Questions